How is it best to start two pumps in series?
Thread Content
To increase the discharge head, we have two centrifugal pumps connected in series here to form a pump set. I would like to ask everyone how to start such a series-connected pump system effectively. It will not damage the pump or pipelines
Also, check whether the pressure that the next pump can handle is within acceptable limits. Such as sealing, structural strength, ...... If possible, of course, start from the low-pressure side first. For reference.
The first pump starts up normally. Then the second pump is connected to the outlet line first; once the outlet pressure stabilizes, the inlet valve of the second pump is slightly opened, and the second pump is started at a low frequency. Once everything is working properly, the outlet valve is opened, and then the frequency as well as the inlet and outlet valves of the second pump and the associated lines are adjusted gradually. It’s sufficient to pay close attention to the outlet pressure of the first pump